Windows 10: Activating Win 10 after motherboard replacement

I had a Windows 10 computer with a digital license that was linked to my Microsoft account. It was upgraded from a Windows 7 license. The motherboard of that PC had a defect so I had to throw it away. After that I removed that computer from the device list of my Microsoft account and used a Laptop for a while.


I don't have my old Win 7 key and I didn't even get a chance to extract the Win 10 key from the old motherboard. And now since I bought a new motherboard is it possible for me to activate a new installation of Windows 10 with my old license?

:)

 

Activating Win 10 after replacing Motherboard

I recently had to replace a motherboard on a Lenovo ThinkCentre due to a blown power supply. After recovering, Windows was not activated and I can't use the troubleshooter to remediate. This system was shipped with Win 7 Pro and upgraded to Win 10 during
the free promotion offer.

Does anyone have suggestions on how to get Win 10 reactivated in this scenario?

Also any thoughts on why Win 10 doesn't recognize the DVD or USB ports in File Explorer?

 

Cannot activate Win 10 Home on an existing PC after replacing the motherboard.

Recently, the motherboard on my home PC (desktop) stopped working. It was originally using Win 8.1 Home, and got upgraded to Win 10 Home in 2016.

After replacing the motherboard and re-loading Win 10 Home, it asked me for a registration key to Activate Win 10, but there is no way to get this info from the previous motherboard, because that is dead and I can't find the original Win 8.1 DVD which was
used to load it. How do I re-activate Win 10 on my home PC?

 

Win 10 After Dell replaces a defective Motherboard

Dell replaced my Latitude that was operating with free Win 10 upgrade after a number of failed repair attempts and suggested that I switch the old SSD harddrive to the new computer to retain my programs and files which I did. Now I see a message to activate
windows but this tells me to go to the Win store and buy it. When I attempt to activate, I receive an error code 0x803F7001 that I cant activate Win 10 because the previous Windows wasn't activated prior to upgrading to Win 10 (Possibly because I somehow
was able to download Win 10 to this computer this morning without knowing what I was doing or that I might be doing something wrong . In my MS account both my old and new computers appear as having Win 10 Pro. I see a bunch of things on the internet which
suggest that I need to contact MS since I changed the Motherboard but that it is possible to have the Win 10 transferred if this change was from an original manufacturer while the product was under warranty (frankly I don't understand why Dell wont help me
with this problem) Is there a number at MS or some other way that I can contact about how to switch and activate and if not what will happen to my computer (which is working fine now) if I donot pay the activation fee. Thankyou for your help.